Thermal Cavity Closer

Thermo-loc Platinum Multi Cavity Closer

Grouped product items
Product Code Cavity Width Length Price Available Qty
32885 50 - 100mm 2.4m
£6.60
In Stock
£6.60
69696 105 - 150mm 2.4m
£8.68
In Stock
£8.68

The Thermo-loc Platinum Multi Cavity Closer is suitable for cavities between 50-to-100mm and 100-to-150mm and is designed to:

  1. Close the cavity at external doors, window jambs and sills.
  2. Provide thermal insulation and prevent ‘cold bridging’.
  3. Provide an effective DPC and thermal barrier between external doors, window jambs or sills.

This cavity closer is durable, resistant to decay, exceeds the minimum thermal resistance path of 0.45m2 K/W stipulated in accredited construction details, and has a thermal conductivity of 0.031W/mK.

The Thermo-loc Platinum Multi Cavity Closer is compliant with Building Regulation Approved Documents C, L1 and L2, satisfies BRE document ‘Thermal Insulation: avoiding risks’ and meets all relevant British and NHBC standards.

The pre-cut grooves allow for quick and easy cutting so you can install the cavity closer onsite, and simple trimming helps to cope with ‘rogue’ cavity widths.

The Thermo-loc Platinum Multi Cavity Closer also exceeds the rigid profile extrusion, which allows it to be used in second fix applications.

Further benefits include:

  1. Global warming potential of less than 5
  2. Ozone depletion potential of zero

Cavity Closer Installation

  • Before installation, please note that the accredited construction detail published by DCLG requires a minimum overlap of 30mm between the window frame and cavity closer.
  • If being used in a second fix application, the cavity closer should be pushed into the open cavity after building work is complete.
  • The compressible nature of the exposed insulation material is used to create a friction fit in the cavity. Alternatively, you can trim the insulation to fit using a sharp knife.
  • Cut the cavity closer into required lengths allowing the jamb section to overlap the sill section by cutting away parts of the fixing flange and butt the underside of the lintel.
  • In order to ensure a secure fit, it’s recommended to fix nails to the flanges.
Write Your Own Review

Delivery Information:

Free Next Day Delivery on orders over £50 to Office, Home or Site.

Orders placed before 4:00pm will be dispatched same day on a next working day service.

Kindly note that our working days are Monday to Friday. Orders placed after 4:00pm on a Friday will be dispatched on Monday using a next working day service, with an expected delivery on Tuesday.

Method Price
Order Value Under £50 (ex. VAT) £8.00
Order Value Over £50 (ex. VAT) FREE

Please note some areas and bespoke products such as plasterboard may incure additional delivery charges. If this is the case we will call or e-mail you to discuss.

Returns Information:

Items not required

Should you require to return any item, we will allow you to do so within 14 days of receipt of the item for a full refund.

To begin the process of returning any item please email [email protected].

A handling charge of £10.00 per parcel will apply to all returns. A refund for returned items will be processed within 14 days of collection.

All items must be in their original packaging (where applicable) and unused.

Incorrect, Missing, Faulty or Damaged Items

Should we supply any incorrect or damaged items, or you discover an item is missing from delivery please notify us within 48 hours of receipt on 0333 005 7088 or email [email protected].

For incorrect or damaged items, we will then arrange to pick up the item and either send you out a replacement or process and refund within 48 hours.